Fractions & Decimals
When fractions are being added or subtracted, to simplify, we are expected to
Find the LCM
What is 0.00025 expressed in standard form?
2.5 x10-4
40 x 41
4
Expanding 5(p+q) is
5p + 5q
When multiplying decimals, the answer should have a ______ of the decimals we started with, while when dividing we have the _______
sum, difference
-leading zeros are not significant
-trailing zeros, when there is NO decimal point present are not significant
Rewriting a fractional index, your denominator will become the _____ and the numerator the _______
root, power
Distributing 3(m - 2n) gives
3m - 6n
True or False
8.9352 rounded to 2 decimal places is 8.94
True
State 2 means by which a number is considered a significant figure
- all non zero digits are significant
- zeros between non-zeros digits are significant
-trailing zeros in a whole number with a decimal point present
-trailing zeros to the right of a decimal point are significant
Simplifying (a10)2 x a5 gives
a25
Simplify 6f + 5g - 2f - 3g
4f + 2g
When we are presented with fractions being divided we should: _____, _____ and ____
Keep, Change, Flip
4 x 103 means we need to move the point ____ spaces to the ____ to _____ the original number, giving _______
three (3), right, RESTORE, 4,000,000
(p8 x p7) ÷ (p2)3 =
p9
-3(2m - 3p) expanded gives
-6m + 9p
2.48 - 0.311 =
2.169
10,023.586 written to 7 significant figures is
10,023.59
When presented with a negative index, its rewritten as a __________ with _____ as the numerator and the denominator becomes __________ but ______
fraction, 1, what was given, positive
5(q - r) - 2(q - r) expanded becomes
5q - 5r -2q + 2r